320888879 has 2 divisors, whose sum is σ = 320888880. Its totient is φ = 320888878.

The previous prime is 320888863. The next prime is 320888903. The reversal of 320888879 is 978888023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320888879 - 2⁴ = 320888863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320888879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320888819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160444439 + 160444440.

It is an arithmetic number, because the mean of its divisors is an integer number (160444440).

Almost surely, 2^320888879 is an apocalyptic number.

320888879 is a deficient number, since it is larger than the sum of its proper divisors (1).

320888879 is an equidigital number, since it uses as much as digits as its factorization.

320888879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 320888879 is about 17913.3715140394. The cubic root of 320888879 is about 684.6231105544.

The spelling of 320888879 in words is "three hundred twenty million, eight hundred eighty-eight thousand, eight hundred seventy-nine".